B-12 エキマニー体ターボチャージャのハウジング熱応力解析(構造,一般講演)

概要

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In order to satisfy regulations about emission of gasoline engines, it is required to activate a catalyst in the beginning of an engine starts. A turbocharger with an integrated manifold is effective in reducing its heat mass to rise temperature of catalyst quickly. The other side, it will be loaded high heat stress because of its complex shape and a rapid temperature gradient with heat cycles. To evaluate damages by heat stress on parts, and to design shapes optimized, we executed CHT (Conjugate Heat Transfer) analysis and FEM analysis jointed. As a result of the calculation and the evaluation, the estimated area of crack initiation is designated clearly, and the area is coincident with the cracks shown in practical test.
公益社団法人日本ガスタービン学会の論文
2010-10-20